Stylographic ink pencil



Mar. 6, 1923. H. A. SCHMIDT.

sTYLoGRAPHIc INK PENCIL.

FILED APR. 6, 1920.

Paiemd Mar. 6,1923.

LME

STYLOGRAPHIC INK PENCIL.

Application led. April 6, 1920. Serial No. 371,718.

To all whom z't may concern.:

Be it known that I, HENRY A. SCHMIDT,

a citizen of theUnited States, and a resident of College Point, 'in thecounty of Queens and State of New York, have invented certain new anduseful Improvements in Stylographic Ink Pencils, is a specification. v

Thls invention relates to improvements in stylographic ink pencil.

One of the objects of this invention is to produce in a stylographic inkpencil a firm and immovable writing point in which the stylus will bemaintained during the operation of writing in properly adjusted stationary relationship to a tubular point and the ink duct or channel will inthe act of writin at all times permit the issuance therethroug of aneven supply of writing fluid while at the same time my invention enablesthe ready manualv movement or reciprocation of the stylus outwardly fromits writing position for the purpose of breaking any seal in the inkduct caused b capillary attraction or the cleaning away from such ductof any obstruction caused by the thickening of the ink or the deposit ofsediment which would render the in k pencil inoperative, and to this endmy invention comprises a body having an ink reservoir and a tubularpoint through which ink is discharged; an air tube or passage extendingfrom an air chamber at the upper part of the body downwardly to thepoint section thereof; a stylus or needle preferably extending throughsaid tube and mounted to move in said point and to have an inward limitof movement so fixed asto cause the outer end of the stylus to bearimmovably and jointly with the tubular point against the paper and coacttherewith while writing but to be movable outwardly beyond its writingposition preferably by means of a manually-actuated plunger located atthe opposite end of the body, which plunger also preferably is providedwith a plston recipro` cable in an air chamber which upon actuationforces air through an axial air tube and assists in freeing the, inkduct or passage and maintaining a flow therethrough.

Another object of my invention is to provide in an ink pencil of thecharacter described means for breaking the vacuum which might otherwisebe formed above the of which the following ink in the ink chamber withinthe body or barrel when the pencil is used in writing. For this purposeI provide in such an ink pencll having a main air tube as abovedescribed, an auxiliary air passage extending from the lower end of saidmain passage upwardly to and communicating with the upper end ofthe inkchamber or reservoir whereby air will be admitted into said upper partof the ink chamber or reservoir above the ink to break said vacuum.

With these and other objects in View, the

`invention comprises the combination ofy members and arrangement ofparts so combined as to co-act and cooperate with each other in theperformance of the functions and the accomplishment of the resultsherein contemplated, and comprises in one of its adaptations the speciesor preferred form illustrated 1n the accompanying drawings, in which- Fig. 1 is a vertical central section through a pencil embodying myinvention with the cap in place and the position;

Fig. 2 is a similar4 section showing the plunger partly depressed andthe stylus extending below and outside the point;

F ig. 3 is a section on the line 3-3 of-'Fig 1; and

' F ig. 4 is a section on the line n4 4: of

Referring noW to these drawings which illustrate a preferred embodimentof my invention, 1 indicates an ordinary cylindrical body or barrel ofhard rubber or similar material, provided at its lower end with atapering point section 2 of similar material which, las shown, has ametallic tubular point 3 suitably mounted therein, which point 3 yhas asuitable duct or passage 3a through which ink is adapted to be fed orsupplied in writing. As illustrated, a stylus 4 extends through the saidtubular writing point and upwardly through a. main air channel or.passage 5 located axlally in an air tube 6 suitably positioned'withinthe barrel 1 so as to provide concentric therewith an ink reservoir 7within lsaid barrel 1. As shown, the air tube is connected to andextends parts in normal writing.

through a partition 8 at the upper end of the barrel between the inkreservoir` 7 and an air chamber 9 so as to permlt sald main air `thatmanual operation of the channel 5 in the tube 6 to communicate with theair chamber 9 which is provided with an opening or port 10 to theatmosphere. The stylus 4 after passing through the tubular point 3 andthrough said axial air channel 5 and through the air chamber 9, isconnected at its upper end to a plunger 11 movable by a spring 14 andhaving an actuatlng portion 13 projecting above a plug 12. The plunger11 is, as shown, provided with a pistonA 15 moving in the air chamber 9so plunger 11 will force air from the, air chamber 9 through the airduct 5 to the point section of the ink reservoir, and a sprlng 14 isdisposed in the air chamber between the partition 8 and'said piston soas normally when writing to retain the piston 15 against this plug 12and the stylus 4 in fixed or immovable relationship to the tubular point3, said stylus being so arranged that the outer end thereof will, whenthe piston is in the position just p described at its inward limit ofmovement,

and parallel to bear jointly with said tubular point'3xon the paper inwriting. A Idownward movement of said piston will compress said springan cause an outward movement of the stylus 4; but will enable thereciprocation of the stylus 4 through the passage 3a` n the point 3 tobreak any capillary seal and clean away any obstruction in said point,thus procuring v an initial su ply and iiowing of ink through the same.his movement of the piston 15 and stylus 4 is preferably effected bymanual mani ulation or pressure upon the end 13 of the p unger 11.

yI also preferably provide in the air tube 6 an auxiliary air passage 16extending from the lower portion of the air tube 6 upwardly the main airchannel 5 and having an air port 16a communicating with the upper end ofthe ink chamber so that any vacuum which may be formed when the pencilis brought into vertical position for writing will be broken by theequalization of pressure behind the ink in said ink chamber 7. A cap 17is provided with a cushion 18 of cork or other suitable material and thetubular point is preerabl forced into said cushion when the cap is paced on the same and the pen is preferably carried in a position withthe point extending downwardly.

Having described my invention, I claim 2- l1. A stylographic ink pencilcomprising a body having an ink reservoir and a tubular writing point,an air chamber above said ink reservoir, an air tube having an airpassage extendin from said air chamber downwardly t rough the inkreservoir to a place adjacent to the writing point; a stylus mounted insaid tubular point and extending upwardly through said air passage andinto said air chamber; a plunger connected to said stylus and movable insaid air chamber, a suitable stop in said air chamber for v.through saidaxial said plunger; means for automatically forcing said stylus againstsaid stop to move the .same into writing position and a finger-portionon said plunger to permit manual movement of the stylus outwardly beyondits writing position` 2.v A stylographic body having an ink reservoirand a tubu writing point, an air chamber above said ink reservoir, anlair tube having a passageextending from said air chamber downwardlythrough the ink reservoir to a place adjacent to the writing point and apiston movable in said air chamber.

3. A stylographic ink pencil comprising a body having an ink reservoirand a tubular writing point, an air chamber above said ink reservoir, anair tube having a passage extending rom said air chamber downwardlythrough the ink reservoir to a place adjacent to the writing point, andalso having another nassage extending from its lower end ink pencilcomprising a upwardly to and communicating with the upper end of the inkreservoir.

4. A stylographic ink pencil comprising a body having an ink reservoirand a tubular writing point, an air chamber above said ink 5. Astylographic ink pencil comprising a body having an ink reservoir and atubular writing point, an reservoir, an air tube having an air passagelocated axially of said body and extending from said air chamberdownwardly to the ink reservoir to a place adjacent [to the writingpoint, a stylus mounted in said tubular point and extending upwardlythrough said axial air passage and into said air chamber, a pistonmovable in said air chamber and connected to said stylus, a plungerconnected to said piston and extending through the opposite end of thepencil body and means for automatically forcing the plunger and stylusagainst the upper end of said air chamber.

6. A stylographic ink pencil comprising a body having an ink reservoirand a tubular writing point, an air chamber above said ink'reservoir, anair tube having an air passage located axially of said body andextending from said air chamber downwardly to the ink reservoir to aplace adjacent'to the writing point, and also having another passageextending from its lower end upwardly to and communicating with theupper end of the ink reservoir, a stylus mounted in said tubular pointand extending #upwardly air passage and into said air chamber above saidink l air chamber, a piston movable in said air In Witness whereof, Ihave signed my chamber and connected to sald stylus, a, name to theforegolng speclcatlon 1n the plunger connected to sa1d p1ston andexpresence of two subscrlbmg'wltnesses.

tending through the opposite end of the pen- HENRY A. SCHMIDT. cil bodyand means for automatically fore- Witnesses: ing the plunger and stylusagainst the upper HELEN V. WHIDDEN,

end of said air chamber. FREDERICK P. RANDOLPH.

